{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2fdfff7b0e05abbf5d2da3cf46873221494a23e1409c4e6eee8dc2e61e3db39c",
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    "signer": "0xb69df63f4665984786e139E6ed0495199c2deD66",
    "userId": "236095320"
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}